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Dissolution kinetics of Amazonian metakaolin in hydrochloric acid

Published online by Cambridge University Press:  02 January 2018

Paula E.A. Lima ,
Rômulo S. Angélica  and
Roberto F. Neves
Paula E.A. Lima*
Affiliation:
Instituto de Geociências, Universidade Federal do Pará, Belém, Brazil
Rômulo S. Angélica
Affiliation:
Instituto de Geociências, Universidade Federal do Pará, Belém, Brazil
Roberto F. Neves
Affiliation:
Faculdade de Engenharia Química, Universidade Federal do Pará, Belém, Brazil
*
*E-mail: [email protected]
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Abstract

The kinetics of dissolution of Amazonian metakaolin in hydrochloric acid (HCl) was studied using the ‘Shrinking Core Model’ for spherical and ‘flat plate’ particles of constant size. The Amazonian kaolin was calcined at 700°C for 2 h. The calcined samples (metakaolins) were leached in an HCl solution with 5% excess at 70, 80 and 95 ± 3°C for 3 h. Samples were collected every 15 min and subjected to Al analysis by the EDTA titrimetric method. Experimental data showed that the spherical morphology produced a better fit with respect to the regression coefficients. The activation energy of the reaction was 90.6 kJ/mol. The chemical process is a first-order leaching reaction. The results of the present study are consistent with those from previous research on this topic, which used HCl with an excess of >90%.

Keywords

kaolinmetakaolinleachingkinetic study
Type
Research Article
Information
Clay Minerals , Volume 52 , Issue 1 , March 2017 , pp. 75 - 82
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2017

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References

Ajemba, R.O. & Onukwuli, O.D. (2012) Kinetic model for Ukpor clay dissolution in hydrochloric acid solution. Journal of Emerging Trends in Engineering and Applied Sciences, 3, 448–54.Google Scholar
Altiokka, M.R. & Hosgün, H.L. (2003) Investigation of the dissolution kinetics of kaolin in HCl solution. Hydrometallurgy, 68, 77–81.CrossRefGoogle Scholar
Altiokka, M.R., Akalin, H., Melek, N. & Akyalçin, S. (2010) Investigation of the dissolution kinetics of meta-kaolin in H2SO4 solution. Industrial & Engineering Chemistry Research, 49, 12379–12382.CrossRefGoogle Scholar
Al-Zahrani, A.A. & Abdul-Majid, M.H. (2009) Extraction of alumina from local clays by hydrochloric acid process. Journal of King Abdulaziz University: Engineering Sciences, 20, 29–41.Google Scholar
Belver, C., Muñoz, M.A.B. & Vicente, M.A. (2002a) Chemical activation of a kaolinite under acid and alkaline conditions. Chemistry of Materials, 14, 2033–2043.Google Scholar
Belver, C., Bañares, M.A. & Vicente, M.A. (2002b) Preparation of porous silica by acid activation of metakaolins. Studies in Surface Science and Catalysis, 144, 307–314.CrossRefGoogle Scholar
Bergaya, F., Dion, P., Alcover, J.F., Clinard, C. & Tchoubar, D. (1996) TEM study of kaolinite thermal decomposition by controlled rate thermal analysis. Journal of Materials Science, 31, 5069–5075.Google Scholar
Colina, F.G., Esplugas, S. & Costa, J. (2002) High-temperature reaction of kaolin with sulfuric acid. Industrial & Engineering Chemistry Research, 41, 4168–4173.Google Scholar
Costa, M.L., Sousa, D.J.L. & Angelica, R.S. (2009) The contribution of lateritization processes to the formation of the kaolin deposits from eastern Amazon. Journal of South American Earth Sciences, 27, 219–234.Google Scholar
Fogler, H.S. (1999) Elements of Chemical Reaction Engineering. Prentice Hall International Editions, New Jersey, USA.Google Scholar
Gajam, S.Y. & Raghavan, S. (1985) A kinetic model for the hydrochloric acid leaching of kaolinite clay in the presence of fluoride ions. Hydrometallurgy, 15, 143–158.Google Scholar
Hulbert, S.F. & Huff, D.E. (1970) Kinetics of alumina removal from a calcined kaolin with nitric, sulphuric and hydrochloric acids. Clay Minerals, 8, 337–345.Google Scholar
Kotz, J.C. & Treichel, P. (1999) Chemistry and Chemical Reactivity. Saunders College Publishing, Florida, USA.Google Scholar
Levenspiel, O. (1972) Chemical Reaction Engineering. Wiley Press, New York.Google Scholar
Lima, P.E.A., Angélica, R.S. & Neves, R.F. (2014) Dissolution kinetics of metakaolin in sulfuric acid: Comparison between heterogeneous and homogeneous reaction methods. Applied Clay Science, 88-89, 159–162.Google Scholar
Morris, H.H. & Gunn, F.A. (1960) Kaolin. Industrial and Engineering Chemistry, 52, 370–376.Google Scholar
Murray, H.H., Alves, C.A. & Bastos, C.H. (2007) Mining, processing and applications of the Capim Basin kaolin, Brazil. Clay Minerals, 42, 145–151.Google Scholar
Mussel, W.N., Murad, E., Criscuolo, P.S.R., Pinheiro, P.G. & Fabris, J.D. (2008) Variation of mineralogy during the beneficiation of Capim kaolin from Para, Brazil. Clay Minerals, 43, 381–391.Google Scholar
Santos, P.S. (1989) Ciência e Tecnologia deArgilas. Edgar Blücher, São Paulo.Google Scholar
Santos, E., Scorzelli, R.B., Bertolino, L.C., Alves, O.C. & Munayco, P. (2012) Characterization of kaolin from the Capim River region, Brazil. Applied Clay Science, 55, 164–167.Google Scholar